If you know someone who works with stainless steel, there's a possible solution. Years ago, we broke a Soling mast in Argentina, and it was impossible to import one, so we had a stainless steel "sleeve" with the shape of the mast made, cut off the broken part and riveted the sleeve over the mast. The boat was still competitive after that, and in any case you don't care about a couple of extra pounds. (Or the mast being a couple of inches shorter.)

_________________Practice makes perfect, so be careful what you practice...

Thank you Mcgyver, Believe it or not I took a mast off a Hobie 18 trimmed down the slot and put it inside our 21sc mast and it fit perfectly, had the mast welded and put another piece (2' long) over the repair and used stainless steel rivots. In my opinion seems stronger then the original. The break was about 5' feet up from the mast base. I have many pics if I can figure out how to post some of them.

Bob a 21sc mast is 3" wide by 6" deep and a hobie 18 mast is 3" wide by 5" deep, some of the slot needs to be trimmed off and it will fit in the SC mast, Matt and I are putting some pics together to explain how I repaired it, I'm not sure if the SE mast is the same width and depth, I think it is but just longer by 4'